1 /* 2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 27 #include <new> 28 29 #include "classfile/classLoaderDataGraph.hpp" 30 #include "classfile/modules.hpp" 31 #include "classfile/protectionDomainCache.hpp" 32 #include "classfile/stringTable.hpp" 33 #include "classfile/symbolTable.hpp" 34 #include "code/codeCache.hpp" 35 #include "compiler/methodMatcher.hpp" 36 #include "compiler/directivesParser.hpp" 37 #include "gc/shared/gcConfig.hpp" 38 #include "gc/shared/genArguments.hpp" 39 #include "gc/shared/genCollectedHeap.hpp" 40 #include "jvmtifiles/jvmtiEnv.hpp" 41 #include "memory/filemap.hpp" 42 #include "memory/heapShared.inline.hpp" 43 #include "memory/metaspaceShared.hpp" 44 #include "memory/metadataFactory.hpp" 45 #include "memory/iterator.hpp" 46 #include "memory/resourceArea.hpp" 47 #include "memory/universe.hpp" 48 #include "memory/oopFactory.hpp" 49 #include "oops/array.hpp" 50 #include "oops/compressedOops.hpp" 51 #include "oops/constantPool.inline.hpp" 52 #include "oops/method.inline.hpp" 53 #include "oops/objArrayKlass.hpp" 54 #include "oops/objArrayOop.inline.hpp" 55 #include "oops/oop.inline.hpp" 56 #include "oops/typeArrayOop.inline.hpp" 57 #include "prims/resolvedMethodTable.hpp" 58 #include "prims/wbtestmethods/parserTests.hpp" 59 #include "prims/whitebox.inline.hpp" 60 #include "runtime/arguments.hpp" 61 #include "runtime/compilationPolicy.hpp" 62 #include "runtime/deoptimization.hpp" 63 #include "runtime/fieldDescriptor.inline.hpp" 64 #include "runtime/flags/jvmFlag.hpp" 65 #include "runtime/frame.inline.hpp" 66 #include "runtime/handles.inline.hpp" 67 #include "runtime/handshake.hpp" 68 #include "runtime/interfaceSupport.inline.hpp" 69 #include "runtime/javaCalls.hpp" 70 #include "runtime/jniHandles.inline.hpp" 71 #include "runtime/os.hpp" 72 #include "runtime/sweeper.hpp" 73 #include "runtime/thread.hpp" 74 #include "runtime/threadSMR.hpp" 75 #include "runtime/vm_version.hpp" 76 #include "services/memoryService.hpp" 77 #include "utilities/align.hpp" 78 #include "utilities/debug.hpp" 79 #include "utilities/elfFile.hpp" 80 #include "utilities/exceptions.hpp" 81 #include "utilities/macros.hpp" 82 #if INCLUDE_CDS 83 #include "prims/cdsoffsets.hpp" 84 #endif // INCLUDE_CDS 85 #if INCLUDE_G1GC 86 #include "gc/g1/g1Arguments.hpp" 87 #include "gc/g1/g1CollectedHeap.inline.hpp" 88 #include "gc/g1/g1ConcurrentMark.hpp" 89 #include "gc/g1/g1ConcurrentMarkThread.hpp" 90 #include "gc/g1/heapRegionRemSet.hpp" 91 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 92 #endif // INCLUDE_G1GC 93 #if INCLUDE_PARALLELGC 94 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 95 #include "gc/parallel/adjoiningGenerations.hpp" 96 #endif // INCLUDE_PARALLELGC 97 #if INCLUDE_NMT 98 #include "services/mallocSiteTable.hpp" 99 #include "services/memTracker.hpp" 100 #include "utilities/nativeCallStack.hpp" 101 #endif // INCLUDE_NMT 102 #if INCLUDE_AOT 103 #include "aot/aotLoader.hpp" 104 #endif // INCLUDE_AOT 105 106 #ifdef LINUX 107 #include "osContainer_linux.hpp" 108 #endif 109 110 #define SIZE_T_MAX_VALUE ((size_t) -1) 111 112 #define CHECK_JNI_EXCEPTION_(env, value) \ 113 do { \ 114 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 115 THREAD->clear_pending_jni_exception_check(); \ 116 if (HAS_PENDING_EXCEPTION) { \ 117 return(value); \ 118 } \ 119 } while (0) 120 121 #define CHECK_JNI_EXCEPTION(env) \ 122 do { \ 123 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 124 THREAD->clear_pending_jni_exception_check(); \ 125 if (HAS_PENDING_EXCEPTION) { \ 126 return; \ 127 } \ 128 } while (0) 129 130 bool WhiteBox::_used = false; 131 volatile bool WhiteBox::compilation_locked = false; 132 133 class VM_WhiteBoxOperation : public VM_Operation { 134 public: 135 VM_WhiteBoxOperation() { } 136 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 137 bool allow_nested_vm_operations() const { return true; } 138 }; 139 140 141 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 142 return (jlong)(void*)JNIHandles::resolve(obj); 143 WB_END 144 145 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 146 return heapOopSize; 147 WB_END 148 149 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 150 return os::vm_page_size(); 151 WB_END 152 153 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 154 return os::vm_allocation_granularity(); 155 WB_END 156 157 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 158 return os::large_page_size(); 159 WB_END 160 161 class WBIsKlassAliveClosure : public LockedClassesDo { 162 Symbol* _name; 163 bool _found; 164 public: 165 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 166 167 void do_klass(Klass* k) { 168 if (_found) return; 169 Symbol* ksym = k->name(); 170 if (ksym->fast_compare(_name) == 0) { 171 _found = true; 172 } 173 } 174 175 bool found() const { 176 return _found; 177 } 178 }; 179 180 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 181 oop h_name = JNIHandles::resolve(name); 182 if (h_name == NULL) return false; 183 Symbol* sym = java_lang_String::as_symbol(h_name); 184 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 185 186 WBIsKlassAliveClosure closure(sym); 187 ClassLoaderDataGraph::classes_do(&closure); 188 189 return closure.found(); 190 WB_END 191 192 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 193 oop h_name = JNIHandles::resolve(name); 194 if (h_name == NULL) return false; 195 Symbol* sym = java_lang_String::as_symbol(h_name); 196 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 197 return (jint)sym->refcount(); 198 WB_END 199 200 201 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 202 #if INCLUDE_JVMTI 203 ResourceMark rm; 204 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 205 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 206 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 207 assert(err == JVMTI_ERROR_NONE, "must not fail"); 208 #endif 209 } 210 WB_END 211 212 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 213 #if INCLUDE_JVMTI 214 ResourceMark rm; 215 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 216 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 217 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 218 assert(err == JVMTI_ERROR_NONE, "must not fail"); 219 #endif 220 } 221 WB_END 222 223 224 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 225 return (jlong)Arguments::max_heap_for_compressed_oops(); 226 } 227 WB_END 228 229 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 230 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 231 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 232 MinHeapSize, 233 InitialHeapSize, 234 MaxHeapSize, 235 SpaceAlignment, 236 HeapAlignment); 237 } 238 WB_END 239 240 #ifndef PRODUCT 241 // Forward declaration 242 void TestReservedSpace_test(); 243 void TestReserveMemorySpecial_test(); 244 void TestVirtualSpace_test(); 245 #endif 246 247 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 248 #ifndef PRODUCT 249 TestReservedSpace_test(); 250 TestReserveMemorySpecial_test(); 251 TestVirtualSpace_test(); 252 #endif 253 WB_END 254 255 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 256 size_t granularity = os::vm_allocation_granularity(); 257 ReservedHeapSpace rhs(100 * granularity, granularity, false); 258 VirtualSpace vs; 259 vs.initialize(rhs, 50 * granularity); 260 261 // Check if constraints are complied 262 if (!( UseCompressedOops && rhs.base() != NULL && 263 CompressedOops::base() != NULL && 264 CompressedOops::use_implicit_null_checks() )) { 265 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 266 "\tUseCompressedOops is %d\n" 267 "\trhs.base() is " PTR_FORMAT "\n" 268 "\tCompressedOops::base() is " PTR_FORMAT "\n" 269 "\tCompressedOops::use_implicit_null_checks() is %d", 270 UseCompressedOops, 271 p2i(rhs.base()), 272 p2i(CompressedOops::base()), 273 CompressedOops::use_implicit_null_checks()); 274 return; 275 } 276 tty->print_cr("Reading from no access area... "); 277 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 278 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 279 WB_END 280 281 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 282 size_t magnitude, size_t iterations) { 283 size_t granularity = os::vm_allocation_granularity(); 284 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 285 VirtualSpace vs; 286 if (!vs.initialize(rhs, 0)) { 287 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 288 return 3; 289 } 290 291 int seed = os::random(); 292 tty->print_cr("Random seed is %d", seed); 293 os::init_random(seed); 294 295 for (size_t i = 0; i < iterations; i++) { 296 297 // Whether we will shrink or grow 298 bool shrink = os::random() % 2L == 0; 299 300 // Get random delta to resize virtual space 301 size_t delta = (size_t)os::random() % magnitude; 302 303 // If we are about to shrink virtual space below zero, then expand instead 304 if (shrink && vs.committed_size() < delta) { 305 shrink = false; 306 } 307 308 // Resizing by delta 309 if (shrink) { 310 vs.shrink_by(delta); 311 } else { 312 // If expanding fails expand_by will silently return false 313 vs.expand_by(delta, true); 314 } 315 } 316 return 0; 317 } 318 319 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 320 jlong reserved_space_size, jlong magnitude, jlong iterations)) 321 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 322 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 323 iterations); 324 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 325 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 326 return 1; 327 } 328 329 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 330 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 331 if (sizeof(size_t) < sizeof(jlong)) { 332 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 333 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 334 || iterations > size_t_max_value) { 335 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 336 return 2; 337 } 338 } 339 340 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 341 (size_t) magnitude, (size_t) iterations); 342 WB_END 343 344 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 345 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 346 WB_END 347 348 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 349 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 350 WB_END 351 352 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 353 return GCConfig::is_gc_selected_ergonomically(); 354 WB_END 355 356 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 357 oop p = JNIHandles::resolve(obj); 358 #if INCLUDE_G1GC 359 if (UseG1GC) { 360 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 361 const HeapRegion* hr = g1h->heap_region_containing(p); 362 if (hr == NULL) { 363 return false; 364 } 365 return !(hr->is_young()); 366 } 367 #endif 368 #if INCLUDE_PARALLELGC 369 if (UseParallelGC) { 370 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 371 return !psh->is_in_young(p); 372 } 373 #endif 374 #if INCLUDE_ZGC 375 if (UseZGC) { 376 return Universe::heap()->is_in(p); 377 } 378 #endif 379 GenCollectedHeap* gch = GenCollectedHeap::heap(); 380 return !gch->is_in_young(p); 381 WB_END 382 383 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 384 oop p = JNIHandles::resolve(obj); 385 return Universe::heap()->obj_size(p) * HeapWordSize; 386 WB_END 387 388 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 389 return (jlong)SpaceAlignment; 390 WB_END 391 392 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 393 return (jlong)HeapAlignment; 394 WB_END 395 396 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 397 return Universe::heap()->supports_concurrent_phase_control(); 398 WB_END 399 400 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 401 Handle h_name(THREAD, JNIHandles::resolve(name)); 402 ResourceMark rm; 403 const char* c_name = java_lang_String::as_utf8_string(h_name()); 404 return Universe::heap()->request_concurrent_phase(c_name); 405 WB_END 406 407 #if INCLUDE_G1GC 408 409 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 410 if (UseG1GC) { 411 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 412 oop result = JNIHandles::resolve(obj); 413 const HeapRegion* hr = g1h->heap_region_containing(result); 414 return hr->is_humongous(); 415 } 416 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 417 WB_END 418 419 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 420 if (UseG1GC) { 421 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 422 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 423 return hr->is_humongous(); 424 } 425 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 426 WB_END 427 428 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 429 if (UseG1GC) { 430 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 431 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 432 return hr->is_free(); 433 } 434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 435 WB_END 436 437 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 438 if (UseG1GC) { 439 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 440 size_t nr = g1h->max_regions(); 441 return (jlong)nr; 442 } 443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 444 WB_END 445 446 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 447 if (UseG1GC) { 448 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 449 size_t nr = g1h->num_free_regions(); 450 return (jlong)nr; 451 } 452 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 453 WB_END 454 455 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 456 if (UseG1GC) { 457 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 458 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 459 } 460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 461 WB_END 462 463 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 464 if (UseG1GC) { 465 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 466 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 467 g1h->collect(GCCause::_wb_conc_mark); 468 return true; 469 } 470 return false; 471 } 472 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 473 WB_END 474 475 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 476 if (UseG1GC) { 477 return (jint)HeapRegion::GrainBytes; 478 } 479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 480 WB_END 481 482 #endif // INCLUDE_G1GC 483 484 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 485 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 486 #if INCLUDE_G1GC 487 if (UseG1GC) { 488 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 489 if (g1h->is_heterogeneous_heap()) { 490 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 491 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 492 } else { 493 return (jlong)g1h->base(); 494 } 495 } 496 #endif // INCLUDE_G1GC 497 #if INCLUDE_PARALLELGC 498 if (UseParallelGC) { 499 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 500 if (AllocateOldGenAt != NULL) { 501 MemRegion reserved = ps_heap->young_gen()->reserved(); 502 return (jlong)reserved.start(); 503 } else { 504 return (jlong)ps_heap->base(); 505 } 506 } 507 #endif // INCLUDE_PARALLELGC 508 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 509 WB_END 510 511 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 512 #if INCLUDE_G1GC 513 if (UseG1GC) { 514 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 515 if (g1h->is_heterogeneous_heap()) { 516 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 517 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 518 } else { 519 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes(); 520 } 521 } 522 #endif // INCLUDE_G1GC 523 #if INCLUDE_PARALLELGC 524 if (UseParallelGC) { 525 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 526 if (AllocateOldGenAt != NULL) { 527 MemRegion reserved = ps_heap->young_gen()->reserved(); 528 return (jlong)reserved.end(); 529 } else { 530 return (jlong)ps_heap->reserved_region().end(); 531 } 532 } 533 #endif // INCLUDE_PARALLELGC 534 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 535 WB_END 536 537 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 538 #if INCLUDE_G1GC 539 if (UseG1GC) { 540 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 541 if (g1h->is_heterogeneous_heap()) { 542 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 543 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 544 } else { 545 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 546 } 547 } 548 #endif // INCLUDE_G1GC 549 #if INCLUDE_PARALLELGC 550 if (UseParallelGC) { 551 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 552 if (AllocateOldGenAt != NULL) { 553 MemRegion reserved = ps_heap->old_gen()->reserved(); 554 return (jlong)reserved.start(); 555 } else { 556 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 557 } 558 } 559 #endif // INCLUDE_PARALLELGC 560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 561 WB_END 562 563 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 564 #if INCLUDE_G1GC 565 if (UseG1GC) { 566 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 567 if (g1h->is_heterogeneous_heap()) { 568 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 569 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 570 } else { 571 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 572 } 573 } 574 #endif // INCLUDE_G1GC 575 #if INCLUDE_PARALLELGC 576 if (UseParallelGC) { 577 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 578 if (AllocateOldGenAt != NULL) { 579 MemRegion reserved = ps_heap->old_gen()->reserved(); 580 return (jlong)reserved.end(); 581 } else { 582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 583 } 584 } 585 #endif // INCLUDE_PARALLELGC 586 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 587 WB_END 588 589 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 590 591 #if INCLUDE_PARALLELGC 592 593 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 594 if (UseParallelGC) { 595 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 596 } 597 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 598 WB_END 599 600 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 601 if (UseParallelGC) { 602 return GenAlignment; 603 } 604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 605 WB_END 606 607 #endif // INCLUDE_PARALLELGC 608 609 #if INCLUDE_G1GC 610 611 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 612 if (UseG1GC) { 613 ResourceMark rm(THREAD); 614 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 615 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 616 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 617 return JNIHandles::make_local(env, h()); 618 } 619 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 620 WB_END 621 622 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 623 if (UseG1GC) { 624 G1MemoryNodeManager* mgr = G1MemoryNodeManager::mgr(); 625 return (jint)mgr->num_active_nodes(); 626 } 627 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 628 WB_END 629 630 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 631 if (UseG1GC) { 632 G1MemoryNodeManager* mgr = G1MemoryNodeManager::mgr(); 633 int num_node_ids = (int)mgr->num_active_nodes(); 634 const int* node_ids = mgr->node_ids(); 635 636 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 637 for (int i = 0; i < num_node_ids; i++) { 638 result->int_at_put(i, (jint)node_ids[i]); 639 } 640 return (jintArray) JNIHandles::make_local(env, result); 641 } 642 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 643 WB_END 644 645 class OldRegionsLivenessClosure: public HeapRegionClosure { 646 647 private: 648 const int _liveness; 649 size_t _total_count; 650 size_t _total_memory; 651 size_t _total_memory_to_free; 652 653 public: 654 OldRegionsLivenessClosure(int liveness) : 655 _liveness(liveness), 656 _total_count(0), 657 _total_memory(0), 658 _total_memory_to_free(0) { } 659 660 size_t total_count() { return _total_count; } 661 size_t total_memory() { return _total_memory; } 662 size_t total_memory_to_free() { return _total_memory_to_free; } 663 664 bool do_heap_region(HeapRegion* r) { 665 if (r->is_old()) { 666 size_t prev_live = r->marked_bytes(); 667 size_t live = r->live_bytes(); 668 size_t size = r->used(); 669 size_t reg_size = HeapRegion::GrainBytes; 670 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 671 _total_memory += size; 672 ++_total_count; 673 if (size == reg_size) { 674 // we don't include non-full regions since they are unlikely included in mixed gc 675 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 676 _total_memory_to_free += size - prev_live; 677 } 678 } 679 } 680 return false; 681 } 682 }; 683 684 685 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 686 if (!UseG1GC) { 687 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 688 } 689 if (liveness < 0) { 690 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 691 } 692 693 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 694 OldRegionsLivenessClosure rli(liveness); 695 g1h->heap_region_iterate(&rli); 696 697 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 698 result->long_at_put(0, rli.total_count()); 699 result->long_at_put(1, rli.total_memory()); 700 result->long_at_put(2, rli.total_memory_to_free()); 701 return (jlongArray) JNIHandles::make_local(env, result); 702 WB_END 703 704 #endif // INCLUDE_G1GC 705 706 #if INCLUDE_NMT 707 // Alloc memory using the test memory type so that we can use that to see if 708 // NMT picks it up correctly 709 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 710 jlong addr = 0; 711 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 712 return addr; 713 WB_END 714 715 // Alloc memory with pseudo call stack. The test can create psudo malloc 716 // allocation site to stress the malloc tracking. 717 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 718 address pc = (address)(size_t)pseudo_stack; 719 NativeCallStack stack(&pc, 1); 720 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 721 WB_END 722 723 // Alloc memory with pseudo call stack and specific memory type. 724 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 725 address pc = (address)(size_t)pseudo_stack; 726 NativeCallStack stack(&pc, 1); 727 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 728 WB_END 729 730 // Free the memory allocated by NMTAllocTest 731 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 732 os::free((void*)(uintptr_t)mem); 733 WB_END 734 735 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 736 jlong addr = 0; 737 738 addr = (jlong)(uintptr_t)os::reserve_memory(size); 739 MemTracker::record_virtual_memory_type((address)addr, mtTest); 740 741 return addr; 742 WB_END 743 744 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 745 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 746 MemTracker::record_virtual_memory_type((address)addr, mtTest); 747 748 return addr; 749 WB_END 750 751 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 752 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 753 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 754 WB_END 755 756 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 757 os::uncommit_memory((char *)(uintptr_t)addr, size); 758 WB_END 759 760 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 761 os::release_memory((char *)(uintptr_t)addr, size); 762 WB_END 763 764 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 765 // Test that we can downgrade NMT levels but not upgrade them. 766 if (MemTracker::tracking_level() == NMT_off) { 767 MemTracker::transition_to(NMT_off); 768 return MemTracker::tracking_level() == NMT_off; 769 } else { 770 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 771 MemTracker::transition_to(NMT_summary); 772 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 773 774 // Can't go to detail once NMT is set to summary. 775 MemTracker::transition_to(NMT_detail); 776 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 777 778 // Shutdown sets tracking level to minimal. 779 MemTracker::shutdown(); 780 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 781 782 // Once the tracking level is minimal, we cannot increase to summary. 783 // The code ignores this request instead of asserting because if the malloc site 784 // table overflows in another thread, it tries to change the code to summary. 785 MemTracker::transition_to(NMT_summary); 786 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 787 788 // Really can never go up to detail, verify that the code would never do this. 789 MemTracker::transition_to(NMT_detail); 790 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 791 return MemTracker::tracking_level() == NMT_minimal; 792 } 793 WB_END 794 795 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 796 int hash_size = MallocSiteTable::hash_buckets(); 797 assert(hash_size > 0, "NMT hash_size should be > 0"); 798 return (jint)hash_size; 799 WB_END 800 #endif // INCLUDE_NMT 801 802 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 803 assert(method != NULL, "method should not be null"); 804 ThreadToNativeFromVM ttn(thread); 805 return env->FromReflectedMethod(method); 806 } 807 808 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 809 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 810 private: 811 int _result; 812 const bool _make_not_entrant; 813 public: 814 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 815 _result(0), _make_not_entrant(make_not_entrant) { } 816 int result() const { return _result; } 817 818 void doit() { 819 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 820 if (t->has_last_Java_frame()) { 821 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 822 frame* f = fst.current(); 823 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 824 RegisterMap* reg_map = fst.register_map(); 825 Deoptimization::deoptimize(t, *f, reg_map); 826 if (_make_not_entrant) { 827 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 828 assert(cm != NULL, "sanity check"); 829 cm->make_not_entrant(); 830 } 831 ++_result; 832 } 833 } 834 } 835 } 836 } 837 }; 838 839 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 840 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 841 VMThread::execute(&op); 842 return op.result(); 843 WB_END 844 845 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 846 CodeCache::mark_all_nmethods_for_deoptimization(); 847 Deoptimization::deoptimize_all_marked(); 848 WB_END 849 850 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 851 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 852 int result = 0; 853 CHECK_JNI_EXCEPTION_(env, result); 854 MutexLocker mu(Compile_lock); 855 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 856 if (is_osr) { 857 result += mh->mark_osr_nmethods(); 858 } else if (mh->code() != NULL) { 859 mh->code()->mark_for_deoptimization(); 860 ++result; 861 } 862 result += CodeCache::mark_for_deoptimization(mh()); 863 if (result > 0) { 864 Deoptimization::deoptimize_all_marked(); 865 } 866 return result; 867 WB_END 868 869 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 870 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 871 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 872 MutexLocker mu(Compile_lock); 873 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 874 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 875 if (code == NULL) { 876 return JNI_FALSE; 877 } 878 return (code->is_alive() && !code->is_marked_for_deoptimization()); 879 WB_END 880 881 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 882 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 883 return false; 884 } 885 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 886 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 887 MutexLocker mu(Compile_lock); 888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 889 if (is_osr) { 890 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 891 } else { 892 return CompilationPolicy::can_be_compiled(mh, comp_level); 893 } 894 WB_END 895 896 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 897 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 898 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 899 MutexLocker mu(Compile_lock); 900 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 901 return mh->queued_for_compilation(); 902 WB_END 903 904 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 905 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 906 return false; // Intrinsic is not available on a non-existent compilation level. 907 } 908 jmethodID method_id, compilation_context_id; 909 method_id = reflected_method_to_jmid(thread, env, method); 910 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 911 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 912 913 DirectiveSet* directive; 914 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 915 assert(comp != NULL, "compiler not available"); 916 if (compilation_context != NULL) { 917 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 918 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 919 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 920 directive = DirectivesStack::getMatchingDirective(cch, comp); 921 } else { 922 // Calling with NULL matches default directive 923 directive = DirectivesStack::getDefaultDirective(comp); 924 } 925 bool result = comp->is_intrinsic_available(mh, directive); 926 DirectivesStack::release(directive); 927 return result; 928 WB_END 929 930 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 931 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 932 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 934 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 935 return (code != NULL ? code->comp_level() : CompLevel_none); 936 WB_END 937 938 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 939 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 940 CHECK_JNI_EXCEPTION(env); 941 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 942 if (is_osr) { 943 mh->set_not_osr_compilable("WhiteBox", comp_level); 944 } else { 945 mh->set_not_compilable("WhiteBox", comp_level); 946 } 947 WB_END 948 949 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 950 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 951 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 952 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 953 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 954 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 955 WB_END 956 957 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 958 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 959 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 960 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 961 bool result = mh->dont_inline(); 962 mh->set_dont_inline(value == JNI_TRUE); 963 return result; 964 WB_END 965 966 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 967 if (comp_level == CompLevel_any) { 968 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 969 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 970 } else { 971 return CompileBroker::queue_size(comp_level); 972 } 973 WB_END 974 975 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 976 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 977 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 979 bool result = mh->force_inline(); 980 mh->set_force_inline(value == JNI_TRUE); 981 return result; 982 WB_END 983 984 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 985 // Screen for unavailable/bad comp level or null method 986 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 987 if (method == NULL) { 988 tty->print_cr("WB error: request to compile NULL method"); 989 return false; 990 } 991 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 992 tty->print_cr("WB error: invalid compilation level %d", comp_level); 993 return false; 994 } 995 if (comp == NULL) { 996 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 997 return false; 998 } 999 1000 // Check if compilation is blocking 1001 methodHandle mh(THREAD, method); 1002 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1003 bool is_blocking = !directive->BackgroundCompilationOption; 1004 DirectivesStack::release(directive); 1005 1006 // Compile method and check result 1007 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 1008 MutexLocker mu(Compile_lock); 1009 bool is_queued = mh->queued_for_compilation(); 1010 if ((!is_blocking && is_queued) || nm != NULL) { 1011 return true; 1012 } 1013 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1014 mh->print_short_name(tty); 1015 tty->cr(); 1016 if (is_blocking && is_queued) { 1017 tty->print_cr("WB error: blocking compilation is still in queue!"); 1018 } 1019 return false; 1020 } 1021 1022 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1023 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1024 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1025 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1026 WB_END 1027 1028 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1029 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1030 Method* clinit = ik->class_initializer(); 1031 if (clinit == NULL) { 1032 return false; 1033 } 1034 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1035 WB_END 1036 1037 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1038 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1039 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1040 1041 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1042 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1043 bool result = directive->PrintAssemblyOption; 1044 DirectivesStack::release(directive); 1045 1046 return result; 1047 WB_END 1048 1049 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1050 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1051 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1052 1053 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1054 1055 ResourceMark rm; 1056 const char* error_msg = NULL; 1057 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1058 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1059 1060 if (m == NULL) { 1061 assert(error_msg != NULL, "Always have an error message"); 1062 tty->print_cr("Got error: %s", error_msg); 1063 return -1; // Pattern failed 1064 } 1065 1066 // Pattern works - now check if it matches 1067 int result; 1068 if (m->match(mh, InlineMatcher::force_inline)) { 1069 result = 2; // Force inline match 1070 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1071 result = 1; // Dont inline match 1072 } else { 1073 result = 0; // No match 1074 } 1075 delete m; 1076 return result; 1077 WB_END 1078 1079 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1080 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1081 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1082 1083 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1084 1085 ResourceMark rm; 1086 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1087 1088 const char* error_msg = NULL; 1089 1090 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1091 if (m == NULL) { 1092 assert(error_msg != NULL, "Must have error_msg"); 1093 tty->print_cr("Got error: %s", error_msg); 1094 return -1; 1095 } 1096 1097 // Pattern works - now check if it matches 1098 int result = m->matches(mh); 1099 delete m; 1100 assert(result == 0 || result == 1, "Result out of range"); 1101 return result; 1102 WB_END 1103 1104 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1105 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1106 CHECK_JNI_EXCEPTION(env); 1107 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1108 1109 MethodData* mdo = mh->method_data(); 1110 if (mdo == NULL) { 1111 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1112 mdo = mh->method_data(); 1113 } 1114 mdo->init(); 1115 InvocationCounter* icnt = mdo->invocation_counter(); 1116 InvocationCounter* bcnt = mdo->backedge_counter(); 1117 // set i-counter according to TieredThresholdPolicy::is_method_profiled 1118 icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold); 1119 bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold); 1120 WB_END 1121 1122 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1124 CHECK_JNI_EXCEPTION(env); 1125 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1126 MutexLocker mu(Compile_lock); 1127 MethodData* mdo = mh->method_data(); 1128 MethodCounters* mcs = mh->method_counters(); 1129 1130 if (mdo != NULL) { 1131 mdo->init(); 1132 ResourceMark rm; 1133 int arg_count = mdo->method()->size_of_parameters(); 1134 for (int i = 0; i < arg_count; i++) { 1135 mdo->set_arg_modified(i, 0); 1136 } 1137 MutexLocker mu(mdo->extra_data_lock()); 1138 mdo->clean_method_data(/*always_clean*/true); 1139 } 1140 1141 mh->clear_not_c1_compilable(); 1142 mh->clear_not_c2_compilable(); 1143 mh->clear_not_c2_osr_compilable(); 1144 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1145 if (mcs != NULL) { 1146 mcs->backedge_counter()->init(); 1147 mcs->invocation_counter()->init(); 1148 mcs->set_interpreter_invocation_count(0); 1149 mcs->set_interpreter_throwout_count(0); 1150 1151 #ifdef TIERED 1152 mcs->set_rate(0.0F); 1153 mh->set_prev_event_count(0); 1154 mh->set_prev_time(0); 1155 #endif 1156 } 1157 WB_END 1158 1159 template <typename T> 1160 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) { 1161 if (name == NULL) { 1162 return false; 1163 } 1164 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1165 const char* flag_name = env->GetStringUTFChars(name, NULL); 1166 CHECK_JNI_EXCEPTION_(env, false); 1167 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1168 JVMFlag::Error result = (*TAt)(flag, value); 1169 env->ReleaseStringUTFChars(name, flag_name); 1170 return (result == JVMFlag::SUCCESS); 1171 } 1172 1173 template <typename T> 1174 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) { 1175 if (name == NULL) { 1176 return false; 1177 } 1178 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1179 const char* flag_name = env->GetStringUTFChars(name, NULL); 1180 CHECK_JNI_EXCEPTION_(env, false); 1181 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1182 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL); 1183 env->ReleaseStringUTFChars(name, flag_name); 1184 return (result == JVMFlag::SUCCESS); 1185 } 1186 1187 template <typename T> 1188 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1189 ResourceMark rm(thread); 1190 jclass clazz = env->FindClass(name->as_C_string()); 1191 CHECK_JNI_EXCEPTION_(env, NULL); 1192 jmethodID methodID = env->GetStaticMethodID(clazz, 1193 vmSymbols::valueOf_name()->as_C_string(), 1194 sig->as_C_string()); 1195 CHECK_JNI_EXCEPTION_(env, NULL); 1196 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1197 CHECK_JNI_EXCEPTION_(env, NULL); 1198 return result; 1199 } 1200 1201 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1202 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1203 } 1204 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1205 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1206 } 1207 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1208 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1209 } 1210 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1211 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1212 }*/ 1213 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1214 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1215 } 1216 1217 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1218 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1219 const char* flag_name = env->GetStringUTFChars(name, NULL); 1220 CHECK_JNI_EXCEPTION_(env, NULL); 1221 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1222 env->ReleaseStringUTFChars(name, flag_name); 1223 return result; 1224 } 1225 1226 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1227 const JVMFlag* flag = getVMFlag(thread, env, name); 1228 return (flag != NULL) && flag->is_constant_in_binary(); 1229 WB_END 1230 1231 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1232 const JVMFlag* flag = getVMFlag(thread, env, name); 1233 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1234 WB_END 1235 1236 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1237 bool result; 1238 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1239 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1240 return booleanBox(thread, env, result); 1241 } 1242 return NULL; 1243 WB_END 1244 1245 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1246 int result; 1247 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1249 return longBox(thread, env, result); 1250 } 1251 return NULL; 1252 WB_END 1253 1254 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1255 uint result; 1256 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1257 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1258 return longBox(thread, env, result); 1259 } 1260 return NULL; 1261 WB_END 1262 1263 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1264 intx result; 1265 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1266 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1267 return longBox(thread, env, result); 1268 } 1269 return NULL; 1270 WB_END 1271 1272 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1273 uintx result; 1274 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1275 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1276 return longBox(thread, env, result); 1277 } 1278 return NULL; 1279 WB_END 1280 1281 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1282 uint64_t result; 1283 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1284 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1285 return longBox(thread, env, result); 1286 } 1287 return NULL; 1288 WB_END 1289 1290 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1291 size_t result; 1292 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1293 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1294 return longBox(thread, env, result); 1295 } 1296 return NULL; 1297 WB_END 1298 1299 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1300 double result; 1301 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1303 return doubleBox(thread, env, result); 1304 } 1305 return NULL; 1306 WB_END 1307 1308 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1309 ccstr ccstrResult; 1310 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1311 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1312 jstring result = env->NewStringUTF(ccstrResult); 1313 CHECK_JNI_EXCEPTION_(env, NULL); 1314 return result; 1315 } 1316 return NULL; 1317 WB_END 1318 1319 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1320 bool result = value == JNI_TRUE ? true : false; 1321 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1322 WB_END 1323 1324 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1325 int result = value; 1326 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1327 WB_END 1328 1329 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1330 uint result = value; 1331 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1332 WB_END 1333 1334 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1335 intx result = value; 1336 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1337 WB_END 1338 1339 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1340 uintx result = value; 1341 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1342 WB_END 1343 1344 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1345 uint64_t result = value; 1346 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1347 WB_END 1348 1349 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1350 size_t result = value; 1351 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1352 WB_END 1353 1354 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1355 double result = value; 1356 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1357 WB_END 1358 1359 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1360 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1361 const char* ccstrValue; 1362 if (value == NULL) { 1363 ccstrValue = NULL; 1364 } 1365 else { 1366 ccstrValue = env->GetStringUTFChars(value, NULL); 1367 CHECK_JNI_EXCEPTION(env); 1368 } 1369 ccstr ccstrResult = ccstrValue; 1370 bool needFree; 1371 { 1372 ThreadInVMfromNative ttvfn(thread); // back to VM 1373 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1374 } 1375 if (value != NULL) { 1376 env->ReleaseStringUTFChars(value, ccstrValue); 1377 } 1378 if (needFree) { 1379 FREE_C_HEAP_ARRAY(char, ccstrResult); 1380 } 1381 WB_END 1382 1383 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1384 WhiteBox::compilation_locked = true; 1385 WB_END 1386 1387 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1388 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1389 WhiteBox::compilation_locked = false; 1390 mo.notify_all(); 1391 WB_END 1392 1393 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1394 // Force a code cache sweep and block until it finished 1395 NMethodSweeper::force_sweep(); 1396 WB_END 1397 1398 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1399 ResourceMark rm(THREAD); 1400 int len; 1401 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1402 return (StringTable::lookup(name, len) != NULL); 1403 WB_END 1404 1405 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1406 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1407 Universe::heap()->collect(GCCause::_wb_full_gc); 1408 #if INCLUDE_G1GC 1409 if (UseG1GC) { 1410 // Needs to be cleared explicitly for G1 1411 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1412 } 1413 #endif // INCLUDE_G1GC 1414 WB_END 1415 1416 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1417 Universe::heap()->collect(GCCause::_wb_young_gc); 1418 WB_END 1419 1420 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1421 // static+volatile in order to force the read to happen 1422 // (not be eliminated by the compiler) 1423 static char c; 1424 static volatile char* p; 1425 1426 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1427 if (p == NULL) { 1428 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1429 } 1430 1431 c = *p; 1432 WB_END 1433 1434 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1435 const char* features = VM_Version::features_string(); 1436 ThreadToNativeFromVM ttn(thread); 1437 jstring features_string = env->NewStringUTF(features); 1438 1439 CHECK_JNI_EXCEPTION_(env, NULL); 1440 1441 return features_string; 1442 WB_END 1443 1444 int WhiteBox::get_blob_type(const CodeBlob* code) { 1445 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1446 if (code->is_aot()) { 1447 return -1; 1448 } 1449 return CodeCache::get_code_heap(code)->code_blob_type(); 1450 } 1451 1452 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1453 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1454 return CodeCache::get_code_heap(blob_type); 1455 } 1456 1457 struct CodeBlobStub { 1458 CodeBlobStub(const CodeBlob* blob) : 1459 name(os::strdup(blob->name())), 1460 size(blob->size()), 1461 blob_type(WhiteBox::get_blob_type(blob)), 1462 address((jlong) blob) { } 1463 ~CodeBlobStub() { os::free((void*) name); } 1464 const char* const name; 1465 const jint size; 1466 const jint blob_type; 1467 const jlong address; 1468 }; 1469 1470 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1471 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1472 CHECK_JNI_EXCEPTION_(env, NULL); 1473 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1474 1475 jstring name = env->NewStringUTF(cb->name); 1476 CHECK_JNI_EXCEPTION_(env, NULL); 1477 env->SetObjectArrayElement(result, 0, name); 1478 1479 jobject obj = integerBox(thread, env, cb->size); 1480 CHECK_JNI_EXCEPTION_(env, NULL); 1481 env->SetObjectArrayElement(result, 1, obj); 1482 1483 obj = integerBox(thread, env, cb->blob_type); 1484 CHECK_JNI_EXCEPTION_(env, NULL); 1485 env->SetObjectArrayElement(result, 2, obj); 1486 1487 obj = longBox(thread, env, cb->address); 1488 CHECK_JNI_EXCEPTION_(env, NULL); 1489 env->SetObjectArrayElement(result, 3, obj); 1490 1491 return result; 1492 } 1493 1494 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1495 ResourceMark rm(THREAD); 1496 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1497 CHECK_JNI_EXCEPTION_(env, NULL); 1498 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1499 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1500 jobjectArray result = NULL; 1501 if (code == NULL) { 1502 return result; 1503 } 1504 int comp_level = code->comp_level(); 1505 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1506 1507 ThreadToNativeFromVM ttn(thread); 1508 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1509 CHECK_JNI_EXCEPTION_(env, NULL); 1510 result = env->NewObjectArray(5, clazz, NULL); 1511 if (result == NULL) { 1512 return result; 1513 } 1514 1515 CodeBlobStub stub(code); 1516 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1517 CHECK_JNI_EXCEPTION_(env, NULL); 1518 env->SetObjectArrayElement(result, 0, codeBlob); 1519 1520 jobject level = integerBox(thread, env, comp_level); 1521 CHECK_JNI_EXCEPTION_(env, NULL); 1522 env->SetObjectArrayElement(result, 1, level); 1523 1524 jbyteArray insts = env->NewByteArray(insts_size); 1525 CHECK_JNI_EXCEPTION_(env, NULL); 1526 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1527 env->SetObjectArrayElement(result, 2, insts); 1528 1529 jobject id = integerBox(thread, env, code->compile_id()); 1530 CHECK_JNI_EXCEPTION_(env, NULL); 1531 env->SetObjectArrayElement(result, 3, id); 1532 1533 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1534 CHECK_JNI_EXCEPTION_(env, NULL); 1535 env->SetObjectArrayElement(result, 4, entry_point); 1536 1537 return result; 1538 WB_END 1539 1540 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1541 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1542 BufferBlob* blob; 1543 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1544 if (full_size < size) { 1545 full_size += align_up(size - full_size, oopSize); 1546 } 1547 { 1548 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1549 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1550 if (blob != NULL) { 1551 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1552 } 1553 } 1554 // Track memory usage statistic after releasing CodeCache_lock 1555 MemoryService::track_code_cache_memory_usage(); 1556 return blob; 1557 } 1558 1559 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1560 if (size < 0) { 1561 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1562 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1563 } 1564 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1565 WB_END 1566 1567 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1568 if (addr == 0) { 1569 return; 1570 } 1571 BufferBlob::free((BufferBlob*) addr); 1572 WB_END 1573 1574 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1575 ResourceMark rm; 1576 GrowableArray<CodeBlobStub*> blobs; 1577 { 1578 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1579 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1580 if (heap == NULL) { 1581 return NULL; 1582 } 1583 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1584 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1585 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1586 new (stub) CodeBlobStub(cb); 1587 blobs.append(stub); 1588 } 1589 } 1590 ThreadToNativeFromVM ttn(thread); 1591 jobjectArray result = NULL; 1592 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1593 CHECK_JNI_EXCEPTION_(env, NULL); 1594 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1595 CHECK_JNI_EXCEPTION_(env, NULL); 1596 if (result == NULL) { 1597 return result; 1598 } 1599 int i = 0; 1600 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1601 it != blobs.end(); ++it) { 1602 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1603 CHECK_JNI_EXCEPTION_(env, NULL); 1604 env->SetObjectArrayElement(result, i, obj); 1605 CHECK_JNI_EXCEPTION_(env, NULL); 1606 ++i; 1607 } 1608 return result; 1609 WB_END 1610 1611 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1612 return CompileBroker::get_compilation_activity_mode(); 1613 WB_END 1614 1615 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1616 if (addr == 0) { 1617 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1618 "WB_GetCodeBlob: addr is null"); 1619 } 1620 ThreadToNativeFromVM ttn(thread); 1621 CodeBlobStub stub((CodeBlob*) addr); 1622 return codeBlob2objectArray(thread, env, &stub); 1623 WB_END 1624 1625 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1626 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1627 CHECK_JNI_EXCEPTION_(env, 0); 1628 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1629 return (jlong) mh->method_data(); 1630 WB_END 1631 1632 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1633 return (jlong) Thread::current()->stack_size(); 1634 WB_END 1635 1636 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1637 JavaThread* t = JavaThread::current(); 1638 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1639 WB_END 1640 1641 1642 int WhiteBox::array_bytes_to_length(size_t bytes) { 1643 return Array<u1>::bytes_to_length(bytes); 1644 } 1645 1646 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1647 if (size < 0) { 1648 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1649 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1650 } 1651 1652 oop class_loader_oop = JNIHandles::resolve(class_loader); 1653 ClassLoaderData* cld = class_loader_oop != NULL 1654 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1655 : ClassLoaderData::the_null_class_loader_data(); 1656 1657 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1658 1659 return (jlong)(uintptr_t)metadata; 1660 WB_END 1661 1662 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1663 oop class_loader_oop = JNIHandles::resolve(class_loader); 1664 ClassLoaderData* cld = class_loader_oop != NULL 1665 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1666 : ClassLoaderData::the_null_class_loader_data(); 1667 1668 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1669 WB_END 1670 1671 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1672 jstring version, jstring location, jobjectArray packages)) 1673 ResourceMark rm(THREAD); 1674 1675 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1676 objArrayHandle packages_h(THREAD, packages_oop); 1677 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1678 1679 char** pkgs = NULL; 1680 if (num_packages > 0) { 1681 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1682 for (int x = 0; x < num_packages; x++) { 1683 oop pkg_str = packages_h->obj_at(x); 1684 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1685 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1686 err_msg("Bad package name")); 1687 } 1688 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1689 } 1690 } 1691 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1692 WB_END 1693 1694 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1695 ResourceMark rm(THREAD); 1696 char* package_name = NULL; 1697 if (package != NULL) { 1698 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1699 } 1700 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1701 WB_END 1702 1703 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1704 ResourceMark rm(THREAD); 1705 char* package_name = NULL; 1706 if (package != NULL) { 1707 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1708 } 1709 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1710 WB_END 1711 1712 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1713 ResourceMark rm(THREAD); 1714 char* package_name = NULL; 1715 if (package != NULL) { 1716 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1717 } 1718 Modules::add_module_exports(module, package_name, NULL, CHECK); 1719 WB_END 1720 1721 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1722 Modules::add_reads_module(from_module, source_module, CHECK); 1723 WB_END 1724 1725 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1726 if (inc < 0) { 1727 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1728 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1729 } 1730 1731 jlong max_size_t = (jlong) ((size_t) -1); 1732 if (inc > max_size_t) { 1733 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1734 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1735 } 1736 1737 size_t new_cap_until_GC = 0; 1738 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1739 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1740 if (!success) { 1741 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1742 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1743 "due to contention with another thread"); 1744 } 1745 return (jlong) new_cap_until_GC; 1746 WB_END 1747 1748 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1749 return (jlong) MetaspaceGC::capacity_until_GC(); 1750 WB_END 1751 1752 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1753 return MetaspaceGC::should_concurrent_collect(); 1754 WB_END 1755 1756 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1757 return (jlong)Metaspace::reserve_alignment(); 1758 WB_END 1759 1760 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1761 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1762 Mutex::_safepoint_check_always : 1763 Mutex::_safepoint_check_never; 1764 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ? 1765 Mutex::_no_safepoint_check_flag : 1766 Mutex::_safepoint_check_flag; 1767 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1768 sfpt_check_attempted); 1769 WB_END 1770 1771 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck)) 1772 // Create a special lock violating condition in value 1773 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ? 1774 Mutex::_safepoint_check_always : 1775 Mutex::_safepoint_check_never; 1776 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ? 1777 Monitor::_safepoint_check_flag : 1778 Monitor::_no_safepoint_check_flag; 1779 1780 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check); 1781 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock. 1782 ThreadBlockInVM tbivm(JavaThread::current()); 1783 WB_END 1784 1785 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1786 oop obj_oop = JNIHandles::resolve(obj); 1787 return (jboolean) obj_oop->mark().has_monitor(); 1788 WB_END 1789 1790 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1791 VM_ForceSafepoint force_safepoint_op; 1792 VMThread::execute(&force_safepoint_op); 1793 WB_END 1794 1795 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1796 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1797 return (jlong) ik->constants(); 1798 WB_END 1799 1800 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1801 return ConstantPool::CPCACHE_INDEX_TAG; 1802 WB_END 1803 1804 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1805 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1806 ConstantPool* cp = ik->constants(); 1807 if (cp->cache() == NULL) { 1808 return -1; 1809 } 1810 return cp->cache()->length(); 1811 WB_END 1812 1813 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1814 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1815 ConstantPool* cp = ik->constants(); 1816 if (cp->cache() == NULL) { 1817 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1818 } 1819 jint cpci = index; 1820 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1821 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1822 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1823 } 1824 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1825 return cpi; 1826 WB_END 1827 1828 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1829 return ConstantPool::encode_invokedynamic_index(index); 1830 WB_END 1831 1832 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1833 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1834 VMThread::execute(&clear_ics); 1835 WB_END 1836 1837 template <typename T> 1838 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1839 assert(value != NULL, "sanity"); 1840 if (method == NULL || name == NULL) { 1841 return false; 1842 } 1843 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1844 CHECK_JNI_EXCEPTION_(env, false); 1845 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1846 // can't be in VM when we call JNI 1847 ThreadToNativeFromVM ttnfv(thread); 1848 const char* flag_name = env->GetStringUTFChars(name, NULL); 1849 CHECK_JNI_EXCEPTION_(env, false); 1850 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1851 env->ReleaseStringUTFChars(name, flag_name); 1852 return result; 1853 } 1854 1855 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1856 bool result; 1857 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1858 // can't be in VM when we call JNI 1859 ThreadToNativeFromVM ttnfv(thread); 1860 return booleanBox(thread, env, result); 1861 } 1862 return NULL; 1863 WB_END 1864 1865 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1866 intx result; 1867 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1868 // can't be in VM when we call JNI 1869 ThreadToNativeFromVM ttnfv(thread); 1870 return longBox(thread, env, result); 1871 } 1872 return NULL; 1873 WB_END 1874 1875 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1876 uintx result; 1877 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1878 // can't be in VM when we call JNI 1879 ThreadToNativeFromVM ttnfv(thread); 1880 return longBox(thread, env, result); 1881 } 1882 return NULL; 1883 WB_END 1884 1885 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1886 double result; 1887 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1888 // can't be in VM when we call JNI 1889 ThreadToNativeFromVM ttnfv(thread); 1890 return doubleBox(thread, env, result); 1891 } 1892 return NULL; 1893 WB_END 1894 1895 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1896 ccstr ccstrResult; 1897 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1898 // can't be in VM when we call JNI 1899 ThreadToNativeFromVM ttnfv(thread); 1900 jstring result = env->NewStringUTF(ccstrResult); 1901 CHECK_JNI_EXCEPTION_(env, NULL); 1902 return result; 1903 } 1904 return NULL; 1905 WB_END 1906 1907 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1908 const char* p = Arguments::get_default_shared_archive_path(); 1909 ThreadToNativeFromVM ttn(thread); 1910 jstring path_string = env->NewStringUTF(p); 1911 1912 CHECK_JNI_EXCEPTION_(env, NULL); 1913 1914 return path_string; 1915 WB_END 1916 1917 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1918 return UseSharedSpaces; 1919 WB_END 1920 1921 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 1922 return FileMapInfo::memory_mapping_failed(); 1923 WB_END 1924 1925 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1926 oop obj_oop = JNIHandles::resolve(obj); 1927 return HeapShared::is_archived_object(obj_oop); 1928 WB_END 1929 1930 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1931 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1932 WB_END 1933 1934 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1935 return !HeapShared::closed_archive_heap_region_mapped(); 1936 WB_END 1937 1938 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1939 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1940 if (k->is_instance_klass()) { 1941 InstanceKlass *ik = InstanceKlass::cast(k); 1942 ConstantPool *cp = ik->constants(); 1943 objArrayOop refs = cp->resolved_references(); 1944 return (jobject)JNIHandles::make_local(env, refs); 1945 } else { 1946 return NULL; 1947 } 1948 WB_END 1949 1950 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 1951 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1952 if (!k->is_instance_klass()) { 1953 return; 1954 } 1955 InstanceKlass *ik = InstanceKlass::cast(k); 1956 ik->link_class(THREAD); // may throw verification error 1957 WB_END 1958 1959 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1960 return HeapShared::open_archive_heap_region_mapped(); 1961 WB_END 1962 1963 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1964 #if INCLUDE_CDS 1965 # ifdef _LP64 1966 if (!UseCompressedOops || !UseCompressedClassPointers) { 1967 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1968 return false; 1969 } 1970 # endif // _LP64 1971 return true; 1972 #else 1973 return false; 1974 #endif // INCLUDE_CDS 1975 WB_END 1976 1977 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1978 return HeapShared::is_heap_object_archiving_allowed(); 1979 WB_END 1980 1981 1982 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1983 #if INCLUDE_JFR 1984 return true; 1985 #else 1986 return false; 1987 #endif // INCLUDE_JFR 1988 WB_END 1989 1990 #if INCLUDE_CDS 1991 1992 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1993 ResourceMark rm; 1994 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1995 int result = CDSOffsets::find_offset(c_name); 1996 return (jint)result; 1997 WB_END 1998 1999 #endif // INCLUDE_CDS 2000 2001 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2002 class TraceSelfClosure : public ThreadClosure { 2003 jint _num_threads_completed; 2004 2005 void do_thread(Thread* th) { 2006 assert(th->is_Java_thread(), "sanity"); 2007 JavaThread* jt = (JavaThread*)th; 2008 ResourceMark rm; 2009 2010 jt->print_on(tty); 2011 jt->print_stack_on(tty); 2012 tty->cr(); 2013 Atomic::inc(&_num_threads_completed); 2014 } 2015 2016 public: 2017 TraceSelfClosure() : _num_threads_completed(0) {} 2018 2019 jint num_threads_completed() const { return _num_threads_completed; } 2020 }; 2021 TraceSelfClosure tsc; 2022 2023 if (all_threads) { 2024 Handshake::execute(&tsc); 2025 } else { 2026 oop thread_oop = JNIHandles::resolve(thread_handle); 2027 if (thread_oop != NULL) { 2028 JavaThread* target = java_lang_Thread::thread(thread_oop); 2029 Handshake::execute(&tsc, target); 2030 } 2031 } 2032 return tsc.num_threads_completed(); 2033 WB_END 2034 2035 //Some convenience methods to deal with objects from java 2036 int WhiteBox::offset_for_field(const char* field_name, oop object, 2037 Symbol* signature_symbol) { 2038 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2039 Thread* THREAD = Thread::current(); 2040 2041 //Get the class of our object 2042 Klass* arg_klass = object->klass(); 2043 //Turn it into an instance-klass 2044 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2045 2046 //Create symbols to look for in the class 2047 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2048 2049 //To be filled in with an offset of the field we're looking for 2050 fieldDescriptor fd; 2051 2052 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2053 if (res == NULL) { 2054 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2055 name_symbol->as_C_string()); 2056 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2057 } 2058 2059 //fetch the field at the offset we've found 2060 int dest_offset = fd.offset(); 2061 2062 return dest_offset; 2063 } 2064 2065 2066 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2067 int offset = offset_for_field(field_name, object, 2068 vmSymbols::string_signature()); 2069 oop string = object->obj_field(offset); 2070 if (string == NULL) { 2071 return NULL; 2072 } 2073 const char* ret = java_lang_String::as_utf8_string(string); 2074 return ret; 2075 } 2076 2077 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2078 int offset = 2079 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2080 bool ret = (object->bool_field(offset) == JNI_TRUE); 2081 return ret; 2082 } 2083 2084 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2085 ResourceMark rm; 2086 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2087 2088 // one by one registration natives for exception catching 2089 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2090 CHECK_JNI_EXCEPTION(env); 2091 for (int i = 0, n = method_count; i < n; ++i) { 2092 // Skip dummy entries 2093 if (method_array[i].fnPtr == NULL) continue; 2094 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2095 jthrowable throwable_obj = env->ExceptionOccurred(); 2096 if (throwable_obj != NULL) { 2097 env->ExceptionClear(); 2098 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2099 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2100 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2101 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2102 method_array[i].name, method_array[i].signature); 2103 } 2104 } else { 2105 // Registration failed unexpectedly. 2106 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2107 method_array[i].name, method_array[i].signature); 2108 env->UnregisterNatives(wbclass); 2109 break; 2110 } 2111 } 2112 } 2113 } 2114 2115 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2116 // can't be in VM when we call JNI 2117 ThreadToNativeFromVM ttnfv(thread); 2118 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2119 CHECK_JNI_EXCEPTION_(env, 0); 2120 int ret; 2121 { 2122 ThreadInVMfromNative ttvfn(thread); // back to VM 2123 ret = DirectivesParser::parse_string(dir, tty); 2124 } 2125 env->ReleaseStringUTFChars(compDirect, dir); 2126 // -1 for error parsing directive. Return 0 as number of directives added. 2127 if (ret == -1) { 2128 ret = 0; 2129 } 2130 return (jint) ret; 2131 WB_END 2132 2133 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2134 DirectivesStack::pop(count); 2135 WB_END 2136 2137 // Checks that the library libfile has the noexecstack bit set. 2138 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2139 jboolean ret = false; 2140 #ifdef LINUX 2141 // Can't be in VM when we call JNI. 2142 ThreadToNativeFromVM ttnfv(thread); 2143 const char* lf = env->GetStringUTFChars(libfile, NULL); 2144 CHECK_JNI_EXCEPTION_(env, 0); 2145 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2146 env->ReleaseStringUTFChars(libfile, lf); 2147 #endif 2148 return ret; 2149 WB_END 2150 2151 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2152 LINUX_ONLY(return OSContainer::is_containerized();) 2153 return false; 2154 WB_END 2155 2156 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2157 os::print_os_info(tty); 2158 WB_END 2159 2160 // Elf decoder 2161 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2162 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2163 ElfFile::_do_not_cache_elf_section = true; 2164 #endif 2165 WB_END 2166 2167 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2168 return (jlong) ResolvedMethodTable::items_count(); 2169 WB_END 2170 2171 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2172 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2173 WB_END 2174 2175 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2176 jint result = 0; 2177 #if INCLUDE_AOT 2178 result = (jint) AOTLoader::heaps_count(); 2179 #endif 2180 return result; 2181 WB_END 2182 2183 #define CC (char*) 2184 2185 static JNINativeMethod methods[] = { 2186 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2187 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2188 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2189 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2190 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2191 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2192 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2193 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2194 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2195 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 2196 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2197 {CC"parseCommandLine0", 2198 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2199 (void*) &WB_ParseCommandLine 2200 }, 2201 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2202 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2203 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2204 (void*)&WB_AddToSystemClassLoaderSearch}, 2205 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2206 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2207 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2208 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2209 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2210 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2211 #if INCLUDE_CDS 2212 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2213 #endif 2214 #if INCLUDE_G1GC 2215 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2216 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2217 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2218 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2219 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2220 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2221 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2222 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2223 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2224 (void*)&WB_G1AuxiliaryMemoryUsage }, 2225 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2226 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2227 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2228 #endif // INCLUDE_G1GC 2229 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2230 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2231 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2232 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2233 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2234 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2235 #if INCLUDE_PARALLELGC 2236 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2237 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2238 #endif 2239 #if INCLUDE_NMT 2240 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2241 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2242 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2243 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2244 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2245 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2246 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2247 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2248 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2249 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2250 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2251 #endif // INCLUDE_NMT 2252 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2253 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2254 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2255 (void*)&WB_DeoptimizeMethod }, 2256 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2257 (void*)&WB_IsMethodCompiled }, 2258 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2259 (void*)&WB_IsMethodCompilable}, 2260 {CC"isMethodQueuedForCompilation0", 2261 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2262 {CC"isIntrinsicAvailable0", 2263 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2264 (void*)&WB_IsIntrinsicAvailable}, 2265 {CC"makeMethodNotCompilable0", 2266 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2267 {CC"testSetDontInlineMethod0", 2268 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2269 {CC"getMethodCompilationLevel0", 2270 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2271 {CC"getMethodEntryBci0", 2272 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2273 {CC"getCompileQueueSize", 2274 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2275 {CC"testSetForceInlineMethod0", 2276 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2277 {CC"enqueueMethodForCompilation0", 2278 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2279 {CC"enqueueInitializerForCompilation0", 2280 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2281 {CC"markMethodProfiled", 2282 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2283 {CC"clearMethodState0", 2284 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2285 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2286 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2287 {CC"matchesMethod", 2288 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2289 (void*)&WB_MatchesMethod}, 2290 {CC"matchesInline", 2291 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2292 (void*)&WB_MatchesInline}, 2293 {CC"shouldPrintAssembly", 2294 CC"(Ljava/lang/reflect/Executable;I)Z", 2295 (void*)&WB_ShouldPrintAssembly}, 2296 2297 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2298 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2299 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2300 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2301 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2302 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2303 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2304 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2305 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2306 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2307 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2308 (void*)&WB_SetStringVMFlag}, 2309 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2310 (void*)&WB_GetBooleanVMFlag}, 2311 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2312 (void*)&WB_GetIntVMFlag}, 2313 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2314 (void*)&WB_GetUintVMFlag}, 2315 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2316 (void*)&WB_GetIntxVMFlag}, 2317 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2318 (void*)&WB_GetUintxVMFlag}, 2319 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2320 (void*)&WB_GetUint64VMFlag}, 2321 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2322 (void*)&WB_GetSizeTVMFlag}, 2323 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2324 (void*)&WB_GetDoubleVMFlag}, 2325 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2326 (void*)&WB_GetStringVMFlag}, 2327 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2328 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2329 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2330 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2331 {CC"allocateMetaspace", 2332 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2333 {CC"freeMetaspace", 2334 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2335 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2336 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2337 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2338 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2339 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2340 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2341 (void*)&WB_GetNMethod }, 2342 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2343 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2344 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2345 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2346 {CC"getCompilationActivityMode", 2347 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2348 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2349 (void*)&WB_GetMethodData }, 2350 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2351 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2352 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2353 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2354 (void*)&WB_DefineModule }, 2355 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2356 (void*)&WB_AddModuleExports }, 2357 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2358 (void*)&WB_AddReadsModule }, 2359 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2360 (void*)&WB_AddModuleExportsToAllUnnamed }, 2361 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2362 (void*)&WB_AddModuleExportsToAll }, 2363 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2364 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock }, 2365 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2366 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2367 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2368 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2369 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2370 {CC"remapInstructionOperandFromCPCache0", 2371 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2372 {CC"encodeConstantPoolIndyIndex0", 2373 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2374 {CC"getMethodBooleanOption", 2375 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2376 (void*)&WB_GetMethodBooleaneOption}, 2377 {CC"getMethodIntxOption", 2378 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2379 (void*)&WB_GetMethodIntxOption}, 2380 {CC"getMethodUintxOption", 2381 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2382 (void*)&WB_GetMethodUintxOption}, 2383 {CC"getMethodDoubleOption", 2384 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2385 (void*)&WB_GetMethodDoubleOption}, 2386 {CC"getMethodStringOption", 2387 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2388 (void*)&WB_GetMethodStringOption}, 2389 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2390 (void*)&WB_GetDefaultArchivePath}, 2391 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2392 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2393 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2394 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2395 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2396 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2397 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2398 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2399 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2400 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2401 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2402 2403 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2404 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2405 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2406 (void*)&WB_AddCompilerDirective }, 2407 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2408 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2409 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2410 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2411 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2412 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2413 (void*)&WB_RequestConcurrentGCPhase}, 2414 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2415 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2416 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2417 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2418 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2419 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2420 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2421 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2422 }; 2423 2424 2425 #undef CC 2426 2427 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2428 { 2429 if (WhiteBoxAPI) { 2430 // Make sure that wbclass is loaded by the null classloader 2431 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2432 Handle loader(THREAD, ik->class_loader()); 2433 if (loader.is_null()) { 2434 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2435 WhiteBox::set_used(); 2436 } 2437 } 2438 } 2439 JVM_END